package com.cc.auth.config;

import com.cc.auth.dto.AdminUserDetails;
import com.cc.auth.filter.JwtAuthenticationTokenFilter;
import com.cc.auth.handler.RestAuthenticationEntryPoint;
import com.cc.auth.handler.RestfulAccessDeniedHandler;
import com.cc.auth.model.UmsAdmin;
import com.cc.auth.model.UmsPermission;
import com.cc.auth.service.UmsAdminService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpMethod;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;

import java.util.List;

/**
 * @Description: 用一句话描述
 * @Auther: 新梦想*陈超
 * @Date: 2021/8/6 16:59
 */
@Configuration
@EnableWebSecurity
public class SecurityConfig  extends WebSecurityConfigurerAdapter {

    @Autowired
    private UmsAdminService adminService;
    @Autowired
    private RestfulAccessDeniedHandler restfulAccessDeniedHandler;
    @Autowired
    private RestAuthenticationEntryPoint restAuthenticationEntryPoint;

    /*1.设置secutiry的httpSecurity*/
    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.csrf().disable()
                .sessionManagement()// 基于token，所以不需要session
                .sessionCreationPolicy(SessionCreationPolicy.STATELESS)
                .and()
                .authorizeRequests()
                .antMatchers(HttpMethod.GET, // 允许对于网站静态资源的无授权访问
                        "/",
                        "/*.html",
                        "/favicon.ico",
                        "/**/*.html",
                        "/**/*.css",
                        "/**/*.js",
                        "/swagger-resources/**",
                        "/v2/api-docs/**")
                .permitAll()
                .antMatchers("/admin/login", "/admin/register")// 对登录注册要允许匿名访问
                .permitAll()
                .antMatchers(HttpMethod.OPTIONS)//跨域请求会先进行一次options请求
                .permitAll()
                .anyRequest()
                .authenticated();
        // 禁用缓存
        http.headers().cacheControl();
        // 添加JWT filter
        http.addFilterBefore(jwtAuthenticationTokenFilter(), UsernamePasswordAuthenticationFilter.class);
        //添加自定义未授权和未登录结果返回
        http.exceptionHandling().accessDeniedHandler(new RestfulAccessDeniedHandler())
                .authenticationEntryPoint(new RestAuthenticationEntryPoint());
    }

    @Bean
    public JwtAuthenticationTokenFilter jwtAuthenticationTokenFilter(){
        return new JwtAuthenticationTokenFilter();
    }

    @Bean
    @Override
    public AuthenticationManager authenticationManagerBean() throws Exception {
        return super.authenticationManagerBean();
    }
    /*
   密码加密器
     */
    @Bean
    public PasswordEncoder passwordEncoder() {
        return new BCryptPasswordEncoder();
    }
    /*
    加载认证用户信息
     */
    @Bean
    public UserDetailsService userDetailsService() {
        //获取登录用户信息
        return username -> {
            UmsAdmin admin = adminService.getAdminByUsername(username);
            if (admin != null) {
                List<UmsPermission> permissionList = adminService.getPermissionList(admin.getId());
                return new AdminUserDetails(admin,permissionList);
            }
            throw new UsernameNotFoundException("用户名或密码错误");
        };
    }
}
